Regulating apparatus for engines.



PAIBNTBD DEC. 25, 1906. A. c. E. ,RATEAU. RBGULATING APPARATUS FORmamas.

'nrnoumr nun 1150.31. 1904.

1 1 m Vii flu uste' camizurd nl Ratgqu 17% witnesses V" 1 a sT -TEsPTENT oF IoE,

"AUGUSTE-CAMILLE EDMOND RYATEAU.,-I'OF PARI l Be it known that I,AUGUSTE GAMILIiE ED-, MOND RATEA-U, a citizen of France, residingratus'for'Eng nes, ofwhich the following 1s a full, clear, concise, andex'act"description, refings', forming a part of this specification.

motors at different points and-preferably; though not necessarily, atdifierentpressures- 'derived from different sources. One source othersource may "be 'a source of steam of employ to supplementfithe lower-,pressure H whichimay vary, may be supplied.

- to belimited to this use and in practicing my 1 invention I employvalves one regulating the applicationof the l'owressure steam to theeach source maybe admitted to the engine.

the control of the valves governing the adi-ng steam or fluid, and theinvention has been admitted'from' the. low-pressure source to the. lowpressure motor or engine element and whereinsteam is admitted from thehighpressure source to the high-pressure. element of the motor-orengines s paratus of my" invention in connectionwvith 1 ators%such, forexample, as are set forth m PatentNoi679,242, dated April.12, -1901'.

, s; FRANCE, Assrenon TO- RATEAU STEAM-REGENERATOR ('JOMPANY, orCHICAGO, ILLINOIS. A'

(J RPQRAC ION- on. WEST VIRGINIA. p v

I IREGIULATINGIAPPARATLIS FO enemas; t

- Specification of Letters Patent. i j

Patented Dec. 25, 1906. Application filed December 31, 1.904. SerialNo.239l6fi- To call whom/git may-concerns steam-accumulator, wherebyproper regulation of the low and high' ressure valves may be effected toregulate t e requisite a 'plica} tion of steam to the engine, so that alossi-fl f ble steam of the low pressure source will be c utilized in theturbine or engine and the highpressure steam iscalled upon only to suply adeficiency inthe *lowressure steam-,- lilo not wish to be limited,owever, to the source of steam that is employed for controlling thevalve-regulating means By means of my invention it is not neces-' saryto have two sources that supply steam in steady fluxes. I have'preferably' em loyed-E two distinct engine'elements, to oneio which thelow-' ressure operating steam or fluid is admitte and to the other ofwhichthe high .70 pressure steam is admitted but I do not wish ;to-be'limited .to the precise way inwhich the" ,low-pressure and the highp'ressure steamare Myinventionhas beenemployed in connecadmltted tothecomposite e'ngineor engine .tionwith steam-turbines, though it is not"adapte'ddfor double pressures that -I have v7 5 ractice '7 1' V p Inthe preferred embodiment of my-inventi'onthere ha sbeenemployed apiston-rod or a plunger attached to piston mechanism,which piston-mechanism .is" preferably constantly 8o iunder the influence of thelow-pressure steam-- I and; of spring mechanism, the s ring mechanv ismacting upon the 'ston mec anism'in one .-direction, while theow-pressure steam acts upon saidipiston mechanism. in the oppositedirection, these opposing forces when ope'ratnormally servin'g'tomaintain the j iston mechanism in a given position, where y the- Y=valves ma be subject-to the control of'a' speed regu ato'r or governorto 'maintain the proper speed of the'engine. .By means of my inventionthis same'governing agencyis also permitted to have the propercontrol ofthe c speed irrespective of the ositionsthe, iston; mechanism mayassumetough thei uence 9 5 of the low-pressure steam and .the spring: mechanismacting thereupon. p I

The g oyer'ninlg' mechanism preferably se'-. cures for-each e' ,ange-inits condition of o'pat Paris, France,-ha ve invented a-certain new anduseful Improvement in Regulating Appaerence being had-to theaccompanying draw- I My invention relates to motors employing.-

fluids preferablysupplied to the engine or may be regeneratedexhaust-steam. The

higher pressure, as the boiler-steam-,,which I steam in order that thedeficiency thereof,-

'cngine and the other t e application of the high-pressure steam, inconjunction with which valves I employ a valve-regulatingapparatus-wherebymore or less of steam from My invention has as animportant object 1011 of high-and low pressure operating at d or steamthrough the agency of opera't found of particular service in thatqcla'ssof power-producing mechanism where steam 1s ,1 v I ,havevery'successfully employed the ap v 'steam'regenera'tive accumulators orregeners eration a similar change in the'adjustment of log I ave.employed} valve-regulating means having common mfluenee 11 on the valves"controlling-the admission oft e high and'low pressure steam,which'valveregula ting means as'been arranged'to be within the influenceof the low pressuresteam admitted from the the valves,while'theagalveqegulating mechanism that is eon'trolled the stegnPreferbably effects adifl erential or adjust-f:

ment of the-valves. -V

I will explain my invention more any b 1' 5 reference: to the,accompanying drawings,

1 showing one application and embodiment of viously been used, forexample, in an engine.

Fig. 2 is a plan view of a portion of the apparatus illustrated in 1,excepting ball-governor is. swung at right angposition. shown'in Fi 1.

es to the ig. 3 ma detail View showing one 0 many types of valvestructures that may be employed in controlling the admission of steaminto the steamengine or turbine. Fig. 4 is a view somewhat diagrammatic,illustratin' a modification of the apparatus shown in i s. 1 and 2.

Like parts are indicated, by si ar characters' of reference throughoutthe different be specifically explaine The invention having been shownin connecti'on with a steam regenerator or accumulator, I have diaammatically indicated various elements. t at enter into such system.

The initial source of steam-pressure is the boiler a, that furnisheslive steam to an engine b, that may be employed for performing anysuitablework and which use is immaterial in connection with mypresentinvention,

the exhaust' of which engine is received in a.

steam regenerative accumulator a, such as has b en illu trat d, forexamp e, my aforesaid patent. The steam from the t e eg era r h s b, iqu ntly used,- in the operation of steam-engines. as. turbines, to whichend there is emplo a valve mechan h, f r mm' e, as

ha ate g- 3Tth co rol th ent; of the steam from the steam-accumulater tothe low-pressure. element (1 of the steam engine or turbine. A valvemechan- ,.Pre e b y im l o he val mechms how 111 Fig. 3,-i11 employ foecatrolling the admission of steam whi h, is at h r pressur an ha upplid rom the accumulator c, which steam-at such increased pressure may, forexample, be received from the boiler a, this steam at increased'pressurehu i t m, t gh! l -n t m be m t d: to the par ul 'se r e whichthe. steam at high pressure'is received.

As a description of one of the valve structures will answer asadescription oiboth, the

structure illustrated full -in Fig. 3 will only The casingf defines asteam-chamber, from the. upper part of which abell-shapedelementgisdepended,'

which bell-shaped element is provided with a series of ports h, thatcommunicate with the space ,about said element g, in which space-thesteam from the source of supply is received. Within the bell-shapedelement said piston an balance the same. that the There may be anysuitable form'of connectionrestablished between the low and highpressure controlling steam-valves. I have indicated a .pipe n, conveyinglow-pressure steam to the low-pressure motorelement,

and a pipe 0 for bringing high-pressure steam' to the high-pressure.rnotor element. The valve-stems p and g of the low and high pressurevalves are'articulated to the links 1' and s, respectively, which linksare fixed upon shafts, to which are also links 1" and s, which latterlinks are flexibly connected with links r and s, that are pivoted orlinked together at their adjacent ends.- It will be seen that the stemsp 9 work in stationary guidesrthat are shown at their lower ends. Aconnecting-rod,t is also linked to the links 1' and s where the latterare joined. The bell-crank lever t, having a fixed axis of rotation atits elbow, has one of its. arms linked to the connecting-rod t and theother of its arms in enga ement with a collar t, that forms a part 0 awell-known ball-governor t and which is diagrammatically indicated inconnection with the engine. or turbine. It'will be apparent that thisball-governor and the link mechanism that I have described in connectionwith it serve to rock the arms. 1' and s as the speed of the. en-

gin hang so th t valves nt oll ng .the low and high pressure steam willbe sito. maintain the multaneously controlled speed cf the engine.

The governing mechanism that has thus been particularly described issupplemented by. a pressure-governor which 18 desirably reg ated by thelo.w-. ressure steam. This pressure-governor in 1 is illustrated in theform of a cylinderc, to the bottom of which is. led a steam-.passage'a', that leads ,preferably directly from the-pipeimmedt ately leading.frdin the; steam-accumulator, sotas directly to, be subject to.lOWwp1'6- sure steam. Wit 't fif y mdel'i here/1s located a iston 11,,into between which and t cap a of the, cylinder is. a coil spring u. Thelow-pressuresteam is admitted below the piston and in conjunction withthe spring above serves to define thaposition of the piston thecylinder. he piston is providedwith a piston-rod u, that may be ivotedthereto somewhat in the manner ol the piston and rod construction of ICCWhile I prefer to admit the operating steam or fluld at difl'erentpoints tothe en- 'ne, I do not wish to be limited in all emodiments ofmy'invention-to this characteristic, as. the valve regulation-is animportant feature of the invention, irrespective'of the mode ofapplicationof the operating fluid or steam tot eengine or turbine'Obviously the engine b may be closed down for periods of time, thesupply of steam to theaccumulaton between the intermittent o erationsof'the engine, in which case the ad edengine or turbine may be 0 eratedsolely from-the boiler-sup ly. Th: flow of steam from the accum ator maythus vary or :cease, an automatic regulation of the supply of steam fromthe boiler mainthepro r-supply' of steam to .the turbine to -e le theturbine properly to perform its work. a

-.As.indicated in this descri tion and in the drawings,-theengine'or-tur me has two opcrating elements, these opera gine,wherefore each elements acting-u n a'common load, a s aft being.

indica' as the common. connection tween thetwo operating elementsof theenoipgrating element of the engine may in-itself a complete engine Istructure, but forming a-component part of the aggregate engine .501prime mover, by

n of the cornmon connec'tion between the two.--

- I=use the-term ests"? and law ressure herein in. their relative sense,meanthat. one pressure ishigher than the oter.' 4

- Ininy division of this application, Serial Ne. 277,710, file'dSeptember 9, 1905, I-have broadly claimed thesystem employing theaccumulator hereindisclosed and specifically paratusithat works-toparticular advantage ent pressures supplied to the. engine or turbineconstruction at such dilferent'pressures but .I do not wishto be limitedto-theapplication o'f fluid at different pressures.

n :It is obvious that manychanges'may be' made in .the apgzratusof'my-invention without departing m the spirit thereof,-and .I

doubt therefore wish to be limited to the I precise embodiments of myinvention; but,

Having-thus .described my invention, I claim as-new and desire to secureby Letters Patent--,

e 3 ingjcontrol' of said valves and governed by operating fluid,substantially as-described.

21 The combination with an engine adapted to be operated by-fluids ofdifi'e p sures,.of a source "of lowressure source ofhigher-pressure'troll' to sai engine, iston mechanism effecting control of said valves,a connection effecting the application of the lowressure fluid to saidpistonmechanisrn, an 'springmechanism opposing the action ofsaidlow-pressure fluimpon the piston, substantially as deson 3. Thecombination with an engine adapt ed to be operated by fluids ofdifierent pressures, of a source of lowressure fluid, a source ofhigher-pressure flui valves controlling the passage of fluid from saidsources to said engine, piston mechanism efiecting conres- uid, valvescon the passage of fluid from said sources trolof said valves, aconnection leading fluid from one of said sources of supply to saidpiston mechanism, and ring mechanism opthe. action-of said low-pressurefluid upon the piston, substantially :as described.

- -.4. .The combination withan engine adapts ed tobe operated by fluidsof differing pressures, of asource of low-pressure flui-i, a

source of higher-pressure fluid, valves con trolling-the passage offluid from saidsources to said engine, apiston having operative con- Inection with both of said valves, a cylinder therefor, a springoperating in one direction upon said-piston, and a connection wherebyfluid may operateupon said piston in the other direction, substantiallyas described.

- 5. The combination with an engine adaptfed to be' operated by fluidsof difiering pressures, of a source of lowpressure fluid, a

source of higher pressune fluid, valves controlling the passage of fluidfrom said sources to said engine, a piston-having operativeconnectionwith both of said valves, a cylinder therefor, a spring operating in onedirection ugm said piston,- and aconnection between t l owressure sourceof fluid for having said flui act upon one sideof the piston,substantially asdescribed. 6. The combinationwith an engineadapted to beoperated by fluids of differing pres-.

sures, of a source of lowressure fluid, a source of higher-pressure uid,valves controlling the passage of fluid from said sources to said:engine, and valve-controlli mechanism governing said valves operatedfluid received from one of said sources, su stantially as described.

7. The combination with an engine adapted to be operated by fluids ofdiffering pressures, of a source of lowressure fluid, a source of--higher-pressure uid, valves controlling the passage of fluid from saidsources to said engine, piston mechanism effecting control of said vaves, a connection efiecting the application ofthe low-pressure fluid tosaid pistonmechanism, and an agency opposing the action of saidlow-pressure fluid upon the piston, substantially as described.

the Brotherhood engine. fThe other end of this piston-rod u is shownconnected with the'elements 1*, s and t where these ele' mentsare'joi'ned, all of which elements, to-

. 5' gether with the element u thus have a common axisof rotation. Wherethe pressure from the low-pressure source of; steam becomes excessive,the piston u will rise against theforce of the spring 11, whereby thelink 1" will be moved in a counter-clockwise;direc-.

tion and the links will be moved'in a clockwise direction,wh'ereby thelinks '1' ands are respectively moved in counter-clockwise and,

. clockwise directions, whereby the low-pres:

- sure valve permitsthe flow of more low-pressure steam and thehigh-pressure valvepermits the flown of less, high-pressure steam. When,however, thelow pressure steam. decreases in fpressure, the spring ueflects depressiono the. piston u g causing a clock- -Wise"movement ofthe arrnfl andthelinkr and a counter-clockwise movement of the 1 arm 3and the link 8, thereby reducing the flow of low-pressure steam andincreasing the 5'. flow, Of -Pres restea by. h

a d e e maxlha e. th qu si a t f ene gy p ied; the t q ec re itspefieceive pe a m J n I have iinine' 'ately above, described some s eciil icposition's or, conditions ofthe thrott es orfinletqalves'ior. the highandlow pressure" steam. 'It is obyicusthatjunder .cer-.

tain circumstances the, low-pressure. valve may be. altogether closedand the high-pres- 3 5 sure valve opened and under other circum-.stances that the high-pressure valve may be altogether closed and thelow-pressure valve opened. -,'It .will thus beseen that lhave providedautomatically-operated throttles, which inassociati'on with thespeed-governor willenable the-engine to take care of varying loads'atrequisitespeed. It will also be seen that I have provided an improvedpower a generating systemincludingtWo sources of operating fluid, anengine adapted to beiop eratedbyfluid received from these sources,

, valves controlling the passage of said fluid from, said engine,mechanism controlled by operatingfl'uid r(preferahly received from thelbw-pressure source) for effecting opening action upon one-valve 18:8it, has closing action npon the :other'valve, whereby the relative 1 post ons of said valves are; determined,and a. l

-. speed'egofvernor simultaneously exerting o en-I relative positionsare thus determined. In-

whichI-h'ave practiced the engine will be opaltogether asylong'as thereis sufli'cieritfluid rece vable 1 from said source; but when the o 5 InFig. 4' I have illustrated one i f y the plstons v andtheir casings,springs being regulation. "Motion" of the links y y indeow-pressurecylinder is supplied s a com-Q ingon'closing-action upon said valves, woseerated by fluid received -from the source '0 vided forthe samepurpose as the connect ing-rod tin the arrangement shown in Fig. 1. The'pipew serves to'adinit'fsteam between u' on the otherlside' of the saidpistons. A

reciprocation oflthe ,pipej'w, will cause move-v ment of the links y yfor purposes of speed pendent of the pipefw is'ef fecte'd u on varia- 8tion in the pressure 0f the steam ehind. the pistons, -as has beenexplained and will be understood, j

I am of'courseaware of compound en-, gines and the admission ofexhauststeam., from: the high-pressure cylinders thereof to their lowpressure cylinders; but in such a 4 aratus the source of steam fromhichrt e ponent part of the engine. In the apparatus of my presentinvention the two sources of steam are distinct from the engine,.thoughthe source of low-pressure steam is indirectly supplied in someembodiments of the invention from the source of high pressure or boilersteam. These sourcesv of steam, however, so far as they are,- related tothe engine, are distinct from the engine. g It will be seen that I haveprovideda, veryg important-advance in the art of power. g'e'neration,which in its preferred embodiment,

resides in a source ofhigh-pressure steam-.1 employed. to. operate anengine'directly, ,aQ; source of low-pressure steam which isfsjrp 1oplied by and replenished by-the exhaust of. said engine, and a secondengine, ,preferably" a turbine, receiving steam fromthesource, of

- lowpressur steam and receiving teamtfibittn, v the source 0high-pressure steam, the beiler ii i5 the-Jsaid high-pressure andlowepressure sources ,of steam being; as-stated, indep end entwith'respect to that engine whichthey .both supply This latter engine is""ost ,de-

sirably. a steam-.turbinqas it best in i'zesthe 26 p v g ;steam from thelow-pressure source *y 1 L the-.2 specific embodiment .of thevinvention.

or regenerator, 'Ido'not limited to this 'sameboiler fonsu'pplyingthehigh-P sure steam to the turbine Al 17 1 refore claims use the term b.oi1er;pressure in the}, .1 broadest sense.

6o substantially. as described".-'

seams s. The combination'with in ngine adapt ed to be operated by fluids'of differing pressures,,ofja source of lowressure flu1d,'a

source of higher-pressure uid, valves controllin the passage of fluidfrom said sources to sai eng1ne,,piston mechanism' efl'fecting controlof said valves, a connection leading fluid from one of said sources'ofsupply to said 1ston mechamsm. and an agency oppos trolling the pass vto-said engine, a iston havin operative-com sai nection with both ofsaid valves, a cylinder therefor, an agency-operating in one direction cupon said piston, and a connectionjb'etween ing t e action of saidlow-pressure fluid upon the piston, substantially, as described. f 9.The combination with an engine adapted to be operated by fluidsofdiflering pressures, of a source'iof lowxressureflmd, a-

111d, valvesconsource of higher-pressure e of fluid from said sourcesnectionwitllb 1, f said va ves, a cylinder therefor, an agency 0 statingin one direction upon said piston, an a-"con'nection whereby fluid mayoperate upon .said piston in theother direction, substantially asdescribed.-

10. The combination with an en e adapted to be operated by fluids of difi'ingipressures, of asource S of low ressure' fluid, a source ofhigher-pressure flui valves controllin the passage of fluid from saidsources to engine, a piston having operative conthe low-pressure sourceof fluid for having 5 said fluid act upon one side of the piston,substantiall s fluid received from'the low-pressure source,

as described; 11-. T 'e combination with an el-rfirgine adapted to beoperated by fluids of d' source of higher-pressure. uid, valvescontrolling the passage of fluid from said sources,

to said engine, and fvalve-controlling mechanism governing said valvesoperated by substantially as described.

12. The combination with an eirtilgme adaptedto beoperated by fluidsof dpressures, of a source of low-pressure fluid, a

source of higher-pressure fluid, a valve con trolling the passage oflow-pressure fluid to said engine, and ,valve-controlling mechan ismgoverning. saidv valve and operated by fluid received from one of saidsources, substantially as described;

i ed "to be operatedby fluids difle d 'sures, of a source oflow-pressure 111d,v

1.4.-The combinationwith-an engine adaptsourceoff1.higher-pressurepiping ed to be operated by fluids of e sures, of a source oflow-pressure A uld, a

ering pressures, of, a source of'lowressure fluid, a

pres- I I that plies the low pressure fluid extendmg-to t e low-pressureportion onlyofsaid engine, a valve controlling the passage of low,pressure fluid to said engine, and valve-c'o'n-- trolling mechanismgoverning said valve and operatedb 'fluidmeceived fromone of saidsources, 'su stantially as described.

15. The combinationwi h an en lne adapt- 1 pressource of higher-pressurefluid','the pipingthat supplies the low-pressure'fluid-exten .to' thelow-pressure portion only of said engme,-;-

avalve controlling the pass e offlow-pres sure fluid to said engine, anvalve-controlling mechanism governingrsaid valve and operated by fluidreceived cm the low-pres-- i sure source, substantially as described; 1

16. Thecombination with an engin'eadaptr ed to be operated by fluids ofdiffering pressures, of a source of low-pressure fillld', .a 7 source ofhigher-pressure fluid, the piping" that six plies the high-pressurefluidlextenda ing to t e hi h-pressure ortion only of-said v g thepassage of low-pressurefluid to said'eng'ine, and valve,- I t said valveand operate'd b fluid received om one of said sources, suj stantially asdescribed. 1

e e,= a vs. vs 'c'ontro controlling mechanism gove 17 The combinationwith an elggmeadapted to be operated by fluids of d' ering pressures, ofa source of l'ow-pressur'e-flmm'a source of higher-pressure fluid thepiping that supplies'the high-pressure fluid extendto the high+pressurebrtion only of said engine, a va ve controll mg low-pressure fluid'tosaid engine, and 'valve-. controlling mechanism governing said valve andoperated by fluidreceived, from the low 5 pressure source, substantiallyasfdescribed, "181. The combination with an'el%ine adapt ed to be"operated by fluids off-d erixhg prose sures, 'of 'a s'ource'oflowr'essu're uid,-.a'

uid, valves cony .to said engine, and asp'eedvernor forreg- %1 of saidvalve's,

source of higher-pressure trolling the passage of fluid from saidsources ulating the operation of bot edto be operated by'fluids'ofd eres-lsures,fof a source ofdow-- res'sure %uid, a

19L The combination with anejine adaptsource, of higher-pressure uid,valves con-. trolling the passage offluid from said sources to saidengine, a speed-governor for regulateing'the o eration of both of saidvalves, and additiona valvs-controlling mechanism op-' erated-by steamfrom one of said sources '2OQThe combin tionw'ith ane?n' eadapta pres-.1\11d, &" source of higher-pressure, uid, valves coned' to be operated yfluids of di e sures, ofa source oflowressure trollin the passageoffluid from said sources to sai engine, .a speed ovemor forre'gulattheo oration of..b ot .of said valves, and ditiona valve-controllingmechanism 0p erated by steam from the low pressure source. 1 0 v thepassage of 1 21. The combination with ane e adaptedtobe operated byfluids of pressures, of a source of lowressure fluid, a 1 source ofhigher-pressure uid, valves contro the passage of fluid from saidsources to sai engine, a speed-governor for regulating the operation ofboth of said valves, and additional valve-controlling mechanism actingupon said valves operated by steam from to one of said sources. Y 22'.The combination with ane e adapted to be operated by fluids of-di fl ipressures, of a source of lowressure uid, a sourceof higher-pressureuid, valves'conl5 trellis? the passageof fluid from said sources to saiengine, a speed-glovernor for regulati the operation of bot of saidvalves, and a r filitional valve-controlling mechanism acting pon saidvalves operated by steam from the lovZ-pressure source. 23. owerenerat'system inc g two sourdes of flfiid, "ding n gine adapted to be operatedby fluid received from said sources, valves controlling the passage offluid from '25 said sources to said engine, andvalve-controllingmechanism gove said valves and actuated by operatinguid, substantially as described;

24. A power-generating system including two sources of fluid, an engineadapted to be operated by fluid received from said sources, valvescontrolling the passage of fluid from said sources to said engine, andvalve-controlling mechanism governing said valves and actuated b theoperating fluid received from one of sai sources, substantially asdescribedA l 25. 'ower-genera system 1110 udmg two soure es of. fluid,an gine adapted tobe 40 valves controlling the passage of fluid fromsaid sources to said engine, andspeed-governing mechanism act uponbothof said valves, substantiallyas ascribed.

26. A power-generating systemincluding two sources of fluid, an engineadapted to be operated by fluid received from said sources, valvescontrolling the passage of fluid from said sources to said engine,speed-governing 5o mechanism operatingupon said valves, an

' having trolling mechanism governing said valves operated by receivedfrom said sources,

trolling mechanism governin said valves 6:

and actuated by operating flllld and serving to have opeping' actionupon one valve while closmg action upon the other valve, substagtiallyas described- I 28. owerenerat' s tem inc u I two sourc es of fl uid ann gin e adapted td li operated by fluid received from said sources,valves controlling the passage of fluid from said sources to saidengine, and valve-conand actuated by the operating fluid receivedfromone'of said sources and servi to have 0 ening action upon one valve w ehaving c osing action upon the other, valve, substantially as described.v 29. A power-generating system including two sources of fluid, anengine adapted to be operated by fluid received from said sources,valves contro the passageof fluid from said sources to said engine,valve controlling 8o mechanism governing said valves and actuated by theoperating fluid received from one of said sources and to have openingaction upon one valve while having closing action uponthe other valve,and speed-gov- 8-5 ermng mechanism also operating. upon said valves,substantially as described.

30. A powerfienerating system including anengine, two uid-ductsconveyingoperatingfluid therefor, a valve in'oneduct oper oated by fluid conveyedby the other duct, and a s cod-governor operating upon said valve, sustantiall'y as described.

In witness whereof I hereunto subscribe my name this 27th day ofOctober, A, 'D. 1904. 4

AUGUSTE .CAHILLE EDMOND RATBAU.

Witnesses:

PAUL JosErH ALEXIS CHALEIL, AROHIBALD R. B'AKER.

